SOLUTION: If x - y = -10, x + z = -6, and y - z = 8, Find the value of (x + y) / z.

Algebra ->  Rational-functions -> SOLUTION: If x - y = -10, x + z = -6, and y - z = 8, Find the value of (x + y) / z.      Log On


   

Question 1132519: If x - y = -10, x + z = -6, and y - z = 8, Find the value of (x + y) / z.
Answer by josgarithmetic(39618) About Me  (Show Source):
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If x - y = -10, x + z = -6, and y - z = 8, Find the value of (x + y) / z.
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Use the last two equations and add corresponding members.
%28x%2Bz%29%2B%28y-z%29=-6%2B8
x%2By%2B0=8-6
x%2By=2

Sum the corresponding members of all three equations, and find:
x=-4.

Second Equation, x%2Bz=-6
z=-6-x
z=-6%2B4
z=-2


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%28x%2By%29%2Fz

2%2F%28-2%29

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